4. The graph of velocity vs. time of an object falling in gravity is characteriz

Question

4. The graph of velocity vs. time of an object falling in gravity is characterized by curve A or B in the plot? velocity OA OB Does the velocity increase at () a constant rate, i.e. with constant acceleration () an increasing rate, i.e. with increasing acceleration. vi time 5. The graph of distance vs. time of an object falling in gravity is characterized by curve A or curve B in the plot? distance OA OB Explain how the change in velocity affects the rate at which the distance increases: (1-2 sentences) time An object is falling from a building What is its speed after it has fallen for 5 seconds? (g 9.8 m/s) 6. ) 49 m/s. () 49 m/s ( 9.8 m/s 98 m/s Show calculation:

Explanation / Answer

4. accelration due to gravity is constant.

hence v vs t curve will be a straight line.

with slope= 9.8 m/s^2

Ans(A)

velocity increases.

- at constant rate.

5. v is increasing with constant rate .

hence distance vs t curve will be parabolic,.

Ans(B)

6. v = v0 + a t

v = 0 + (9.8 x 5) =49 m/s

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